I temporarily have my female Drina living in a hospital tank and there is a bubble nest in the corner that looks just like it would if there was a male living in the tank.....it takes up the entire side of the Kritter Keeper.
I knew that females sometimes blew bubbles...but not actual nests.

I'll post a picture of her for you guys. She is definitely a girl! Her egg dot isn't pronounced like some of my girls. She is a Crowntail & her fins are only a little bit longer than Vegas' (my other CT girl who has short fins).

This is her looking at her bubble nest. Just like the boys!
She is a real trouble maker in the Sorority...she loves to flare & chase & just be an all around jerk. But i haven't ever seen her try to spawn.

I was looking at pictures of CT females and her are definitely longer! But she has that big egg belly like the rest of my girls, petco sold her as a female (but it is petco...), and I'm like 100% sure that you used to be able to see her egg spot.

I was looking at pictures of CT females and her are definitely longer! But she has that big egg belly like the rest of my girls, petco sold her as a female (but it is petco...), and I'm like 100% sure that you used to be able to see her egg spot.

just because she has that egg belly doesnt mean that she is a female. juvenile bettas have that bloated look up until they hit their teen years or months . basically they have that when they are from 3-4 and maybe more weeks old.